1. General description
The isotopic data and corresponding information are recorded in ascii-format in csv files. Variable names of point measurement in the csv file are described in Table 1. Data variables are stored in the available resolutions from the original papers. Data columns for each measurement are in the following order: number, the number of source paper, latitude, longitude, time, tag variable 1 (representing the data type), tag variable 2 (representing the available temporal resolution), ��18O, ��D, note. The latitude and longitude are obtained according to either the reported location in paper or the Google Earth/Wikipedia reported location. The time is the most accurate time available from the paper for the measurement. Different kinds of temporal resolution are represented in the following way: day: YYYYMMDD, month: YYYYMM, year: YYYY or wider range, where YYYY, MM and DD denote year, month and date, respectively; symbol ��-�� is used to link the start time and end time to represent a period; symbol ��,�� is used to link separate time period. The interpolation global map of ��18O in river water using two methods are provided in grid format. These files are also available at the website: http://www.thuwater.org/gnir_e/.

2. File description
Four files are inclued in this dataverse. The two rar files are the grid format files of global interpolation map of ��18O in river water using two methods, i.e., inverse distance weighted interpolation and regression interpolation. The csv file "river isotope.csv" is the data record collected from published articles. Referrences for the "the number of source paper" are listed in the xls file "data source referrence".

3. Usage Notes
The data within the database are all from published papers. Some accurate information (e.g. original data record, accurate sampling location and time) may be missed because they were not reported in the paper. We encourage original article authors and interested parties to supplement detailed information to refine the database. 
 
	